I recently ended a romance with a man, when he told me that several months ago he'd secured the services of a psychiatrist-friend of his, whom he'd asked to come to his home for the express purpose of listening-in on a 2-hour phone conversation with me. The listening-in occurred completely without my knowledge. My ex told me that he wanted his psychiatrist-friend's input because he didn't trust me at the time.
What are the ethics of this sort of spying, if spying's what it can be called? Does it make any difference that my ex is a retired Professor of Philosophy/Ethics?
Thank you for your consideration.